We are just testing some new HP DL380 G8 machines (32 GB RAM, Smart Array Gen8 Controller with RAID10, 2 CPU's with 8 Cores each + HyperThreading, Proxmox 3). The first server has 4x 1 TB SATA drives in RAID10:
The second one has 8x 300 GB SAS drives in RAID10:
As you can see, the SATA drives have a better FSYNC-Value compared to the SAS drives, but lower buffered reads. So which configuration would you choose if you want to run VM's with Debian Linux (KVM, RAW-Files, no VIRTIO for network or storage), used as Webservers (LAMP) with many simultaneous requests? Alternatively, we could also place the storage on external (NFS-) Servers, but I guess that the performance with a Gigabit link will not be good enough. Are there any improvements with Proxmox 3 in terms of cluster storage (Ceph, Sheepdog, ...) ?
We also run some openVZ systems - as far as I know, these can only be stored localy or on NFS storage, right?
Code:
CPU BOGOMIPS: 127684.80
REGEX/SECOND: 1323724
HD SIZE: 94.49 GB (/dev/mapper/pve-root)
BUFFERED READS: 401.60 MB/sec
AVERAGE SEEK TIME: 7.00 ms
FSYNCS/SECOND: 4475.75
DNS EXT: 43.03 ms
DNS INT: 39.48 msCode:
CPU BOGOMIPS: 127680.00
REGEX/SECOND: 1207380
HD SIZE: 94.49 GB (/dev/mapper/pve-root)
BUFFERED READS: 985.61 MB/sec
AVERAGE SEEK TIME: 3.74 ms
FSYNCS/SECOND: 3425.66
DNS EXT: 37.97 ms
DNS INT: 41.70 msWe also run some openVZ systems - as far as I know, these can only be stored localy or on NFS storage, right?